Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
REVENUES:
Net sales	$ 379,339	$ 341,254	$ 308,770
Other	33	414	490
TOTAL REVENUE	379,372	341,668	309,260
COST OF GOODS SOLD	177,974	160,871	157,859
Gross profit	201,398	180,797	151,401
OPERATING EXPENSES:
Selling, general and administrative	89,426	83,216	88,939
Research and development	12,955	15,714	18,332
Restructuring and strategic transaction	15,348	8,451	5,093
Gain on sale of building	0	(1,086)	0
Operating Leases, Future Minimum Payments Due	1,737
Legal settlements, net	0	1,798	0
Impairment of assets held for sale	728	4,139	0
Total operating expenses	118,457	112,232	112,364
Income from operations	82,941	68,565	39,037
Bargain Purchase Gain	1,456	0	0
OTHER INCOME,NET	767	1,134	755
Income before income taxes	85,164	69,699	39,792
PROVISION FOR INCOME TAXES	(22,080)	(24,714)	(13,457)
Net Income	$ 63,084	$ 44,985	$ 26,335
NET INCOME PER SHARE
Basic	$ 3.90	$ 2.84	$ 1.72
Diluted	$ 3.66	$ 2.73	$ 1.68
WEIGHTED AVERAGE NUMBER OF SHARES
Basic (in shares)	16,168	15,848	15,282
Diluted (in shares)	17,254	16,496	15,647